The Lens,optical Instrument, cataloged under National Stock Number 6650-00-809-1817, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-809-1817 |
| Primary Part Number | 6180382 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| FSC Application Data | COMPARATOR,TOPOGRAPHICAL AIRCRAFT BOMBING FIRE CONTROL |
| Individual Lens Style | DOUBLE CONVEX |
| Back Focal Length | 0.9026 INCHES IN |
| Front Focal Length | 0.8073 INCHES IN |
| Element Left Surface Radius | 1.500 INCHES IN |
| Equivalent Focal Length | 1.0273 INCHES IN |
| Element Right Surface Radius | 0.850 INCHES IN |
| Material Document and Classification | MIL-G-174, CLASS 1, GRADE A MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 1.250 INCHES NOMINAL IN |
| Abbe Constant | 57.400 |
| Axial Thickness | 0.500 INCHES NOMINAL IN |
| Material | GLASS OPTICAL |
| Refraction Index | 1.5725 NOMINAL |
| Single Lens Style | DOUBLE CONVEX |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6180382 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| 6180382 | International Business Machines Corp Parts Order Center Dept E - 54 (USA) |
| Reference | Meaning |
|---|---|
| 6180382 | 5/9 Secondary reference International Business Machines Corporation Dba IBM |
NSN 6650-00-809-1817 is a Lens,optical Instrument, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-00-809-1817 has 2 manufacturer part numbers on file: 6180382 (Lockheed Martin Corporation Div Rotary and Mission Systems), 6180382 (International Business Machines Corp Parts Order Center Dept E - 54).
Key specifications for 6180382: FSC Application Data: COMPARATOR,TOPOGRAPHICAL AIRCRAFT BOMBING FIRE CONTROL; Individual Lens Style: DOUBLE CONVEX; Back Focal Length: 0.9026 INCHES IN; Front Focal Length: 0.8073 INCHES IN. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6650-00-809-1817 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.